A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. A graph of the results is shown in the picture. A. Using the graph, what is the melting point of X? B. What phase (physical state) of X would you expect to find in the flask after 9 kJ/mol of heat has been added? Select all that apply: solid, liquid, or gas

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Q: 1 10 9 8 7 6 5 4 3 2 1 HSP-00-768 מממ

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Q: Name the organic compound required to react with Tollen's reagent to produce hexanoic acid.

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A: The Correct option is MnO-4 (aq).

Q: Give the condensed structure and IUPAC Name of the two

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A: Solution -

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Q: CH2=CH(CH2)4CH3 Give the Expanded Structure and IUPAC Name

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Q: The two chair forms of cis-1,3-dimethylcyclohexane are shown. Which is lower in energy and why?

A:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.